package com.bw.controller;

import com.bw.entity.User;
import com.bw.mapper.UserMapper;
import org.spring.kun.common.Md5Utils;
import org.spring.kun.common.TokenUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.http.HttpServletResponse;
import javax.validation.Valid;

@Controller
public class LoginController {

    @Autowired
    UserMapper userMapper;


    @RequestMapping("/loginPage.do")
    public String loginPage(){

        return "login";
    }


    @RequestMapping("/login.do")
    public String login(@Valid User loginUser, BindingResult result, Model model, HttpServletResponse response){

        if (result.hasErrors()){
            model.addAttribute("error",result.getAllErrors().get(0).getDefaultMessage());

            return "login";
        }
        // 用户名是否存在

        User userFromDB =  userMapper.selectByName(loginUser.getName());

        if (userFromDB == null){
            model.addAttribute("error","用户名不存在");
            return "login";
        }
         // 密码是否正确
        String loginUserPassword = loginUser.getPassword();

        String salt = userFromDB.getSalt();

        String password = userFromDB.getPassword();

        String md5String = Md5Utils.getMD5String(loginUserPassword + salt);

        if (!md5String.equals(password)){
            model.addAttribute("error","密码错误");
            return "login";
        }
        // 加密用户信息
        TokenUtils.responseTokenByCookie(userFromDB,response);


        return "redirect:list.do";
    }
}
